IntelliDeck Waterproof Deck Membranes - IntelliDeckIntellideck is waterproof membrane that turns your deck into a hassle-free living space. Designed for years of outdoor use, splinter free, easy maintenance.

What Is Vinyl Deck Flooring? Waterproof Decks - DecksGoOnly the 40 and 60 mil is worth using. The 60 mil is approved for use as a waterproofing material over living spaces. Sloped For Drainage. Any deck, wood, vinyl, composite should always have a slope to help shed water away from the house. But with a waterproof vinyl deck flooring material its even more important. 2% is a minimum required slope. But even up to 3% or 4% you still will hardly notice it. And any railing system can be built so the posts are installed just slightly below 90&nbsp;...